12V 2.1Ah VRLA AGM Battery, Faston F1, NP2.1-12

Introduction to the 12V 2.1Ah VRLA AGM Battery (NP2.1-12)

The NP2.1-12 is a compact, sealed 12 V, 2.1 Ah valve-regulated lead‑acid (VRLA) battery built with absorbed glass mat (AGM) technology. Designed for small backup and portable applications, it combines maintenance‑free operation, spill‑proof construction and Faston F1 (4.75 mm) quick‑fit terminals for straightforward installation. With a modest footprint (178 × 34 × 64 mm) and a mass of just 0.82 kg, this battery is ideal where space is limited but dependable standby or cyclic power is required.

Key features at a glance

• Nominal voltage: 12 V and capacity: 2.1 Ah (20‑hour rate).
• AGM / VRLA sealed construction — maintenance‑free and spill‑proof.
• Lead‑calcium grids for improved life and better recovery from deep discharge.
• Faston F1 (4.75 mm) terminals for quick, reliable connections.
• Compact dimensions and light weight for portable or tight installations.
• Wide operating temperature range and low self‑discharge for standby use.

Detailed specifications and benefits

• Nominal voltage:12 V — the standard voltage for many small UPS, emergency lighting and alarm systems.
• Capacity:2.1 Ah (20‑hour rate). The battery also lists ~1.9 Ah at a 10‑hour rate, giving a realistic sense of usable energy under different discharge profiles.
• Maximum discharge current:63 A (1 s) and 21 A (1 min) — sufficient for brief high current events such as powering alarm sirens, emergency strobes or inverter startup surges in small systems.
• Measured impedance:65 mΩ (1 kHz) — a low internal impedance supports better transient response and current delivery when loads change quickly.

• Dimensions:178 × 34 × 64 mm (± tolerances) — allows installation in narrow compartments and small enclosures.
• Mass:0.82 kg — light enough for portable devices and easy handling during replacement.
• Terminal type:FASTON / Quickfit 4.75 mm (F1) — widely used standard connectors that speed up installation and reduce the need for special adapters.
• Case material:ABS (UL94:HB), with an FR version available (UL94:V0) for applications requiring improved flame resistance.

• Float charge voltage:13.65 V (block) / 2.275 V/cell ±1% (20°C) — typical for standby systems where the battery remains connected to a charger.
• Cyclic (boost) voltage:14.50 V (block) / 2.42 V/cell ±3% (20°C) — recommended when the battery is used in repeated charge/discharge cycles.
• Charge current limits:cyclic charge current limit of 0.525 A; float charge has no specified hard limit but should follow manufacturer guidance.
• Design life:Up to 5 years (EUROBAT standard commercial category 3–5 years) when used and maintained within recommended conditions.

• Storage capacity loss:~3% per month at 20°C — low self‑discharge makes it suitable for standby use with infrequent charging cycles.
• Operating temperature:Charge: -15°C to +50°C; Discharge: -20°C to +60°C — wide temperature tolerance for many indoor and semi-protected outdoor installations.
• Installation orientation:Any orientation except continuously inverted — offers flexibility during installation, but follow device manufacturer recommendations for long‑term reliability.

Practical benefits in real applications

The NP2.1-12’s strengths become clear in small, safety‑critical and space‑constrained systems. AGM technology is inherently sealed and spill‑proof, removing the need for periodic watering and simplifying maintenance in deployed systems. Lead‑calcium grids slow down corrosion and improve recovery following deep discharge events — an important attribute for alarm systems and emergency lighting that may be fully discharged and then recharged repeatedly.

The Faston F1 terminals make connection work fast and reliable: technicians can quickly swap batteries during routine maintenance or emergency replacement without special tooling. The battery’s light weight and compact footprint reduce strain on mounting brackets and allow retrofitting into existing enclosures where larger batteries won’t fit.

Use cases and scenarios where the NP2.1-12 excels

• Emergency lighting and exit signs:Fits in narrow lamp housings and provides reliable standby power to meet local code requirements for short-duration illumination.
• Intruder and fire alarm panels:Small but capable backup to maintain panel operation, sirens and communications during power loss events.
• Small UPS and desktop standby power:Ideal for compact uninterruptible power supplies serving routers, modems, access points and single workstations.
• Portable devices and field instruments:Lightweight option for temporary or mobile setups where lead‑acid robustness is preferred.
• Small cyclic applications:Where repeated charge/discharge cycles at low currents are required — the cyclic charge voltage and limits are well-suited to these tasks.

Comparisons with similar products on the market

When choosing a small backup battery, buyers will often compare the NP2.1-12 with other lead‑acid cells and with emerging lithium options. Below are practical comparisons to help guide selection:

• Capacity trade-offs:Compared with 1.2 Ah cells, the NP2.1-12 offers more run‑time without appreciable size increase; compared with 7 Ah cells, it’s much smaller and lighter but offers less duration — choose based on available space and required uptime.
• Cost:Small AGM cells like the NP2.1-12 typically have a lower upfront cost than larger SLA units and remain a cost‑effective solution for modest backup needs.
• Installation flexibility:Slim dimensions of the NP2.1-12 often enable installation where square 7 Ah bricks will not fit.

• Energy density & weight:Lithium batteries usually offer higher energy per kilogram and longer cycle life, but at a higher cost per Ah. For very small loads and budget‑conscious projects, the NP2.1-12 remains attractive.
• Charging systems:Lithium chemistries require different chargers and battery management systems. If the existing system is designed around lead‑acid float and boost voltages, an AGM battery like the NP2.1-12 avoids additional electronics.
• Safety and transport:Lead‑acid AGM batteries are robust and simpler to ship in many regulatory regimes than some lithium types; however, lithium options may offer longer life and lighter weight if those benefits justify the added cost and system changes.

Customer testimonials and feedback

Official customer testimonials for this particular model are not provided here. Below are representative types of feedback commonly reported for small AGM backup batteries like the NP2.1-12 (these are illustrative summaries rather than verbatim reviews):

• "Compact and reliable — fitted into an old emergency light housing with minimal effort and it held charge during monthly tests."
• "Good value for money; technician appreciated the Faston terminals for quick replacement on-site."
• "Not as light as lithium, but much cheaper and works with our existing charger — ideal for our alarm panel."

If you are evaluating this battery for a commercial installation, seek field feedback from installers who have used the NP2.1-12 in similar scenarios or request sample units for pilot testing.

Safety, compliance and installation notes

• The NP2.1-12 is a sealed VRLA unit — do not open or incinerate. Avoid short circuits and follow local regulations for transport and disposal.
• Check the manufacturer datasheet for details on CE/UKCA marking, correct charging profiles and any installation limits.
• Installation or replacement in safety‑critical systems (emergency lighting, fire or security panels) should be carried out by a qualified person following the system manufacturer’s instructions.

Conclusion: Why choose the NP2.1-12?

The 12V 2.1Ah NP2.1-12 AGM VRLA battery is a practical, low‑cost choice for compact standby power needs. Its sealed AGM design delivers maintenance‑free reliability, while lead‑calcium grids and low internal impedance support good recovery and transient performance. Faston F1 terminals and a small form factor make installation straightforward in tight enclosures and legacy systems. While lithium alternatives can offer longer life and lighter weight, the NP2.1-12 remains attractive where system compatibility, upfront cost and simplicity are priorities.

For homeowners, installers and equipment designers needing dependable short‑duration backup or portable power in a compact and affordable package, the NP2.1-12 is a solid option. Verify compatibility with your charger and system, follow safety guidance, and you’ll have a dependable little battery that performs well in a wide range of small UPS, alarm and emergency lighting applications.